Explanation
Explanation:
Ferromagnetic substances are those which get strongly magnetized in the presence of a magnetic field.
These substances have domains that get aligned in the magnetic field, thus increasing their strength.
These are strongly attracted by a magnet.
Examples include iron,cobalt,nickel,etc.
Hence, option B is the correct answer.
Spin Magnetic moment is √n(n+2)
where n is the number of unpaired electrons in Co+2 and Cr+3 the number of unpaired electrons is 2. So they have same spin magnetic moment
Please disable the adBlock and continue. Thank you.